Grandpa can often eat jujube, fungus, tremella, medlar, honey, lotus seeds and so on. Carrot porridge, kelp and mung bean soup
In terms of diet care, Chinese medicine also takes the balance of yin and yang as the starting point and divides diet into appropriateness and taboo. Should be conducive to the secret of Yin Pingyang, and vice versa. Different people have different taboos. For example, those elderly people with yin deficiency and hyperactivity of yang should not eat products with big heat supplements. People with phlegm-dampness constitution should avoid greasy food; People with wood fire constitution should avoid spicy food; People with skin diseases and asthma should avoid eating seafood such as shrimp and crab; People with a cold stomach should avoid eating cold food.
Please see my space blog for details.